65 lines
1.9 KiB
C
65 lines
1.9 KiB
C
/*
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* Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
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*
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* This program is free software: you can use, redistribute, and/or modify
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* it under the terms of the GNU Affero General Public License, version 3
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* or later ("AGPL"), as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _TD_COMMON_VARIANT_H_
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#define _TD_COMMON_VARIANT_H_
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#include "tarray.h"
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#include "ttoken.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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// variant, each number/string/field_id has a corresponding struct during parsing sql
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typedef struct tVariant {
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uint32_t nType;
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int32_t nLen; // only used for string, for number, it is useless
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union {
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int64_t i64;
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uint64_t u64;
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double dKey;
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char * pz;
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wchar_t *wpz;
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SArray *arr; // only for 'in' query to hold value list, not value for a field
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};
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} tVariant;
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bool tVariantIsValid(tVariant *pVar);
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void tVariantCreate(tVariant *pVar, SStrToken *token);
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void tVariantCreateFromBinary(tVariant *pVar, const char *pz, size_t len, uint32_t type);
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void tVariantDestroy(tVariant *pV);
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void tVariantAssign(tVariant *pDst, const tVariant *pSrc);
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int32_t tVariantCompare(const tVariant* p1, const tVariant* p2);
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int32_t tVariantToString(tVariant *pVar, char *dst);
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int32_t tVariantDump(tVariant *pVariant, char *payload, int16_t type, bool includeLengthPrefix);
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int32_t tVariantDumpEx(tVariant *pVariant, char *payload, int16_t type, bool includeLengthPrefix, bool *converted, char *extInfo);
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int32_t tVariantTypeSetType(tVariant *pVariant, char type);
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#ifdef __cplusplus
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}
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#endif
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#endif /*_TD_COMMON_VARIANT_H_*/
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